Home / 21,117.13-29,133.35-13,562.42

Finding the Fourth Proportional to 21,117.13, 29,133.35 and 13,562.42

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Solution

The fourth proportional to 21,117.13, 29,133.35 and 13,562.42 is: 18,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.13 : 29,133.35 = 13,562.42 : x
  2. Step 2: Convert to fraction form
    21,117.13/29,133.35 = 13,562.42/x
  3. Step 3: Cross multiply
    21,117.13x = 29,133.35 × 13,562.42
  4. Step 4: Simplify right side
    21,117.13x = 395,118,642.38
  5. Step 5: Solve for x
    x = 395,118,642.38/21,117.13
  6. Step 6: Final answer
    x = 18,710.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.